Set for timbering mines.



H. M. BARBER.

SET FOR TIMBERING MINES.

APPLlcArmN man MAY 1. 191s.

E. ,22E-,444., Patented May 15, 1917.

2 SHEETS-SHEET l.

H. M. BARBER.

SET FOR TIMBERING MINES.

APPLICATION FILED MAY 1. 1916.

Pa'tented May 15, 1917.

2 SHEETS-SHEET 2.

HOIVIER IVI. BARBER, 0F GOLDFIELD, NEVADA.

SET FOR TIMBERIN G MINES.

Specification of Letters Patent.

Patented May 15, 1917.

Application led May 1, 1916. Serial No. 94,606.

To all 'whom t may concern Be it known that I, HOMER M. BARBER, a citizen of the Unitedv States, residing at Goldiield, in the county of Esmeralda, State of Nevada, have invented new and useful Improvements in Setsfor Timbering Mines, of which the following is a specification.

This invention relates to a set for timberl ing mines, and it is part of a system used for the mining of ore by a slicing method. The

Vslicing method as heretofore practised consists in driving in from the working shaft on the rst level below the capping usually about one hundred feet until the ore is encountered. A level is then driven through the center of the ore body raising at intervals to the capping. The upraises are usually spaced about fifty feet. From the top of the first raise to the top of the second raise, immediately below the capping the ore is stoped out, thus forming a slice. Timbers are placed in position as the ore is removed. Upon completion of the removal of the ore the capping is caved in. This is done by blasting, whereby the caved capping or waste covers the timbers. l

Another method comprises filling the stope with waste. Such systems result in the loss of all the timber. The system of slicing has the advantage of avoiding filling the open space made by the removal of ore with waste from distant places.

My improved set for timbering permits a change in the method of taking out the ore and putting in the timbers. Instead of taking the whole slice before caving, the caving may be done as the miners retreat. A level is driven in from the working shaft to the ore and upraises driven as before. From the top of the first raise a tunnnel is driven to the second raise, and at the same time transversely from the foot wall to the hanging wall. The ore is then taken out progres-4 sively toward the second raise, timbers being put in as the ore is taken out and the blocks from which ore is removed caved in as the miners retreat toward the second raise. The timbers which are reclaimed from the sets are used to timber the neXt sets opened up by the removal of the ore.

The important feature of my invention is the post construction whereby the sets may be quickly and easily removed when caving.

I have illustrated an embodiment of my invention in the accompanying drawings, in which:

Figure 1 is a view of a set in position.

Fig. 2 is a post of the set.

Fig. 3 is a section as seen on the line 3 3 of Fig. 2.

Fig. 4 is a section as of Fig. 2.

Fig. 5 is an enlarged fragmentary view showing a shackle as applied to a post.

Fig. 6 is a plan view of the shackle applied to a post.

More specifically, 7, 8, and 9 indicate posts of similar construction. 10 and 11 are caps resting upon the upper ends of the posts and braced by braces 12, 13, 14 and 15. Ties 1G and 17, and an intermediate tie, not shown, resting on post 8 space the sets. On top of the capping is bridging indicated generally by 18 and supporting timber matting 19. which carries the weight of the roof.

The posts 7, 8, and 9 are each similar in construction. Referring to Figs. 1, 2, 3 and 4, each post is comprised of two sections, an upper section 20 and a lower section 21.

The posts are preferably square or rectangular in section, and in actual practice are preferably 7 feet long and 8X8 inches. About two feet from the top of the post a out 22 is made transverse to the post dividing it into two parts. This cut is made at an angle seen on the line 4 4 Vpreferably of 14 degrees and 30 minutes to the horizontal. In order to prevent separation of the two parts when a post is supporting weight, VI have provided a hole extending across'the cut and divided diametrically by the cut. This hole is denoted by 23 and forms registering mortises, one in each half of the post. The hole is preferably bored before the cut is made, and if made 1.34 inches in diameter, it will receive a one inch standard pipe which is split longitudinally into halves, each half being fastened to a section of the post by means of wood screws or other suitable fastening means. A pin is inserted in the hole and is preferably made of machine steel, and of the same diameter as the hole, which, according to the dimensions above referred to would be one inch.

l/Vith the pin in place forming a tongue the post will support loads parallel to its axis without the sections of the post slipping. It is obvious that removal of the pin 24 will permit the post sections to slip and by 25, 2G, 27 and 23. With the dimensions of the post above referred to the scabs would preferably be one inch by 6 inches by 5 feet long, and are fastened to the post'by. nailing:

or other suitable means. These scabs support the toesotthe braces 12, 13, larand 15,

whose positions are shown in the completed set.

In erectingthe sets the lower sections 21 of the posts are set on ootfblocks, the pins 2tare then placed in position in the mortise 23 and the upper section 2O of the post set in place. shackles are then clamped to the post `to hold the upper and lower sectionsv together.` In Figs. 5 and 6 are shown a shackle 29 oi a common form, coinprising'a section 30 which embraces one half of: the post provided at the ends withhinged portions 31 and 32 having outstanding locking fingersA 33 and 3d. To the locking fingers -33 f is pivotally connected a loop 35 having an arm 36 pivotally connected thereto intermediate its ends. The toe 37 of the arm 3G is engaged with the finger 34 and the arm is forced against the section 31 of the shackle v thereby drawing the sections 31V and 32 together and locking them. As the upper section 20 ofthe post is not provided with scabs, shims 38, 39, 410 and L11 are inserted between the shackle and the upper sectionV These shims arev of the sameof the'post. cross sectional dimensions as the scabs.

Assuming that the sections 20 and 21 of* shackles may then be removed and thei braces'12, 13, 14 and 15 set in position, tli'e- 1 toe of a brace restsy upon -a scab and extends to the center of a cap. `Wedges are driven in the space between the toes of adjacent braces from each side, thus tighteningA them 4 and at the same time permitting easy re? moval when caving.- The wedges are indi-- cated by 42 in Fig. 1.

The set is collapsed by'taking out the braces and the pin` and then tapping the which permits them to be taken outk easily.

Copies Vof this patent may be obtained for ve cents each, byv addressingV the Gommissioner" of-Patents, I

The use of bridging allows-theV and gives ample time to reclaim the timbers. lhe timber mat 19 is the only portion which is lost. As large portions of the slice are never open at one time, accidental caving which .en dangersl the life ofmen is reduced to aminimum;

The. raise sets are cut similar to the stope sets and'braced horizontally instead of at an angle. The construction of particular sets may be varied, but in generalthe sets are similar t'o-:thel square sets now in common use. Vith my improved set the post has no horn and is braced iomvall sides;

1. A set, comprising al combination-,of

posts divided ftra-nsversely byanioblique cut and having registering 'mortises 11i-the faces.

havinga toe disposed onone-offsaidshoul-l ders and lthe otherV toeldisposed againsti said cap, said b'racesoverlaying the cutinsaid'A post, thereby preventingt slipping'- ofithe same.

2. set, comprisingV agcombination ofA posts divided ltransversely" by,l anobliquecut and having vregistering"mortises4 A'iiii'tlie-aces ot l said 'cu-t, detachable tongues disposed*v in said inortises, transverse'sh'ouldrs onf said posts, a cap disposedon*andlbetween;saidl posts, braces eachh'aving-atoedisposedon one of said Vshoulders andithejotlier'toe ydis posed against'said cap,- and wedges'disposed adjacent the-toesof saidbra'ces.

3. A set, comprising.` ajcombinationtotV posts divided transverselyfby an oblique jcut and having `registering mortisesin the faces said 'moi-tiscs, Vbearing lags lextending'longitudinally of said rpost-s with their upper ends adjacentsaid cut, a capfdisposed on and jbetween said posts, and braces 'each having a toe disposed upon a'lag and the other toe thereof disposed lagainst said cap.

L1. A set, comprising acombination of v posts divided transversely by Aan' oblique "cut" and having Vregistering mortisesV in`v the Afaces oisaid cut, detachable tongues .disposed injV said Vmortises, Ybearing lags extending longi- Y,

tudina'lly of said posts with their .upper ends adjacentsaid cut, a capl disposed ion' and'between Vsaid posts, braces each having.A atoe disposed upon alag and the other toe thereof disposed-against said cap, and wedges disposed between adjacent toes of said braces. In witness that I claim the foregoing 1I have hereunto subscribed my name this 10th.

day of April, 1916. e

' HOMER MS BARBER.

Washington, Il).V C.

o-` said cut,v detachable tongues disposedin Y Aiio 

